With Super Mario Maker, Nintendo’s make-your-own-Mario-level toolbox, just around the corner, amateur Mario artisans would do well to revisit World 1-1 and its invaluable level-design lessons. Luckily, Eurogamer has just the ticket. Yesterday, it published a video featuring Shigeru Miyamoto, Super Mario Bros.’ director, and Takashi Tezuka, the assistant director, breaking down the creation of World 1-1 and the thoughts that went into its obstacles. There’s a good reason why the first enemy you encounter is a goomba and not a koopa, or why a safer duplicate immediately precedes a tricky, life-threatening jump. Miyamoto gets into all that, plus some discussion of how he and the team made Mario feel so natural to control, and his answers are as enlightening and charming as ever.